Abacus with money indicia thereon



Jan. 3l, 1956 c. M. FORBES, JR

ABACUS WITH MONEY INDICIA THEREON Filed Dec. 9, 1954 INVENTOR.

United States Patent O 2,733,009 ABACUS WITH MONEY INBTCIA Cecil M. Forbes, Jr., Homewond, Ala. Application December 9, 1954, Serial No. 474,239 1 Claim. (Cl. 2255-123) This invention relates to an abacus having money indicia thereon to thus provide easy means of calculating a total amount of money. It has for its main objects to provide such a device that will be highly eicient for the purpose intended, simple in structure, cheap to manufacture, easy to use and keep in working condition, and extremely durable.

A further object is to provide such a device for easily keeping account of money spent while shopping or the like.

Other objects and advantages will appear from the drawing and description.

By referring generally to the drawing, a part of this application, it will be observed that Fig. 1 is a plan view of an abacus made according to the present invention; Fig. 2 is a sectional View on line 2 2 of Fig. l; and Fig. 3 is a sectional View on line 3 3 of Fig. l.

Similar reference numerals refer to similar parts throughout the several views.

Referring to the drawing in detail it will be seen that the abacus comprises a frame 1 with a back 2, said frame having two sections with one being approximately twice the area of the other, a plurality of cross members 3 and 4 on which disks 5 and approximately square pieces 6 are mounted slidable. The disks and square pieces are provided with integral portions 7 that t into indentures 8 in the back 2. The cross members are adapted for bending slightly for easy manual movement of the disks and square pieces. Five of the disks have lfi' marked on each one; two of the disks have marked on each; ve of the disks have 10 marked on each; two of the disks have 50cl marked on each; five of the square pieces have $1.00 marked on each; two of the square pieces have $5.00 marked on each; five of the square pieces have $10.00 marked on each; and two of the square pieces have $50.00 marked on each.

The back 2 is provided with a hanger 9, and a clip 10 for holding a writing pad thereon if desired. ln operation the disks are moved toward the cross member 11 and the end of the frame 1. The same movement is used for the square pieces. Before using the disks and square pieces for calculating purposes they are all moved away from cross bar 11. As an instance of use assuming ve items of the value of l0 each had been purchased, the user would first move to the right the ve disks having 10p marked on each, then move to the left one disk having 50p marked thereon, then move all 10 markers to left.

The device may be made of any material suitable for the purpose, but I prefer to use light metal, plastic, or wood; also it may be made in different sizes and capacities depending on how and where to be used.

While I have shown and described the preferred etnbodiment of my invention, I do not wish to limit same to the exact and precise details of structure, but reserve the right to make all modifications and changes so long as they remain within the scope of the invention and the following claim.

Having described my invention I claim:

An abacus of the character described comprising, a frame, a cross member positioned in said frame dividing it into two sections, one section being approximately twice the area of the other section, a plurality of fiat bars positioned parallel with each and extending from one end of the frame to the other end thereof, one flat bar having a plurality of disks mounted slidable thereon with each disk having marked thereon l; one flat bar having a plurality of disks mounted slidable thereon with each disk having marked thereon 5; one flat bar having a plurality of disks mounted slidable thereon with each disk having marked thereon l0; one at bar having a plurality of disks mounted slidable thereon with each disk having marked thereon 50c; one flat bar having a plurality of square pieces mounted slidable thereon with each square piece having marked thereon $1.00; one flat bar having a plurality of square pieces mounted slidable thereon with each square piece having marked thereon $5.00; one flat bar having a plurality of square pieces mounted slidable thereon with each square piece having marked thereon $10.00; one flat bar having a plurality of square pieces mounted slidable thereon with each square piece having marked thereon $50.00; a back attached to said frame, a plurality of indentures in said back and positioned under said disks and square pieces and in line therewith, each 0f said disks and square pieces having an integral rounded portion of a size to tit in said indentures when in register therewith, a paper pad holder with a hanger attached to the back of the frame at one end thereof.

References Cited in the le or" this patent UNITED STATES PATENTS 232,482 Fitch Sept. 2l, 1880 378,866 Clark et al Mar. 6, 1888 547,916 Furrer Oct. l5, 1895 733,045 Huettel July 7, 1903 909,823 Roscoe Jan. l2, 1909 FOREIGN PATENTS 3,834 Great Britain Mar. 24,1894 

